Culvert.



F. G. BRADBURY.

GULVERT.

APPLIGATION I'ILED NOV. 30, 1909.

Patented Aug. 12, 1913.

nnrr

FREDERICK G. BRADBURY, OF ST. PAUL, MINNESOTA.

CULVERT.

Specification of Letters Patent.

Application filed November 30, 1909. Serial No. 530,639.

To all wom z't may concern Be it known that I, FREDERIOK G. BRAD- BURY,a citizen of the United States, residing at St. Paul, in the county ofRamsey and State of Minnesota, have invented a new and usefulImprovement in Culverts of which the following is a specification.

My invention relates to improvements in culverts and more particularlyalthough not exclusively to that class which is made of reinforcedmetal. r

The primary Object is to provide below the body of the culvert a drain.In a reinforeed culvert made of corrugated netal this drain is adaptedto conduct water or other liquid longitudinally out of the culvert 'fromthe transverse corrugations. With this invention substantially theentire body may be corrugated or otherwise reinforced while with priordevices wherein water does not collect in the corrugations, the lowerhalf is sm`ooth and weaker in construction than the upper corrugatedportion. Such prior constructions are not satisfactory because they arenot strong and will not retain their shape. With entirely co-rrugatedculverts water collects in the lower portions of the corrugations, ruststhe metal and the life of the culvert is thus very much shortened.

The longitudinal joints between the parts of culverts heretofore usedare frequently broken due to expansion and contraction of the metalduring wide changes of temperature when the culvert is embedded in theground.

The above objections and others which will appear to those familiar withthis art are entirely overcome by this invention in a simple, effectiveand inexpensive manner. The whirling motion set up in the water informer constructions which tends to retard its longitudinal passage, canonly be entirely overcome by the use of the drain.

In the accompanying drawings forming part of this specification, Figure1 is a side view partly in section of a detail of my invention and Fig.2 is a cross section taken upon the line X-X of Fig. 1.

In the drawings A represents the tube or body portion of my culvert madeout of thin metal or other suitable material and formed with transversecorrugations D which substantially encircle the entire tubular portion.Formed below the tube A is a longitudinal drain or gutter B made out ofa longitudinal series of tiles G composed of vitrifiecl 'when it isassembled for use.

Clay, cement or other suitable material such for instance as is used inconstructing drain tiles. The tube or body of the culvert may be :tormedalong its longitudinal edges with flat downwardly projecting andoutwardly turned hook portions 2 and 3 which are spaced later-ally apartand engage upwardly projecting inturned shoulders et along the sides ofthe tiles. Lugs 5 in the trough of the tiles engage the hooks 2 and 3and prevent them from becoming disengaged transversely from the shoulderportions 4. To connect or disconnect the tiles from the tube of theculvert they are fixed longitudinally upon the hooks :2 and 3. The endsof the tiles may be oonnected by an overlapping joint 6 or in any othersuitable manner desired. This construction forms a longitudinallyinterlocking oint which enables the tube to be completed without the useof tools Two sections 7 and 8 of the body or tube may be joined togetherby the joint 9 and rivets 10. This joint between the ends of the sectionmay be of any suitable or well known construction now employed. Thegutter located below the corrugations D receives any water that may tendto collect therein and conducts it longitudinally away so that no waterwill stand in the corrugations or drain and rustthe metal. Thecorrugations in the tube and the drain formed below the tube do notdecrease the strength of the culvert. The mode of joining the drain andtube also compensates for eXpansion and contraction of the tube due tochanges of temperature and overco-nes all objections to rivets or boltssheering off in cold weather as in prior devices. The drain also permitslongitudinal expansion and contraction ot the body.

For shipping purposes the tubes may be laid out fiat or a number oftubes nested together and the culvert then assembled where it is to beused by securing the drain to the body without the use of tools.

The construction of drain may be changed and modified within the spiritof my invention and the tube of the culvert may also be of any suitabledesign or construction desired, such as circular, arched, reinforced orplain without reintorcements. The joints between the tube and drain mayalso be changed and modified within the scope of the following claims.

This invention is clearly adaptable for conduits for electricalconductors, drain tiles Patented Aug. is, rais;

and for other purposes and where the term culvert is used I mean it toinclude conduits, drain tiles or any other equivalent de- Vice. The termtube is used in the above description as meaning the body portion of thedevice.

In accorclance with the patent statutes I have described the principlesof operation of my invention together with the apparatus which I nowConsider to represent the best embodiment thereof but I desire to haveit understood that the construction shown is only illustrative and thatthe invention can be carried out by other means and applied to usesother than those above set forth within the scope of the followingclaims.

Having described my invention, what I claim as new and desire to protectby Letters Patent is 1. A culvert, consisting` of a transverselycorrugated tube, and a tile duct below said tube having its edgesdetachably interloched with edges of said tube.

2. 'A culvert, consisting` of a tube, and a tile duct below said tubehaving its edges detachably interlocked with edges of said tube.

3. A culvert having a transversely reinforced metal body and anon-corrodible duct associated with and into which the contents of theinterstices in said body drain, said duc-t consisting of a series oftiles having their ends overlapping each other and their side edgesdetachably joined to side edges of said body.

4:. A culvert having a body and a noncorrodible tile drain duct securedto said body by means of a longitudinal interlocking separable jointbetween said members, for the purposes specified.

5. In a device of the class set forth, a tile duct formed with sidesextending up and turned in to form engagements spaced apart and adaptedto hold portions of a culvert and stops adjacent said engagementsadapted to prevent the portions of the culvert which are held by saidengagements, from lateral displacement, said parts of said tile beingadapted to permit said tile to move longitudinally into and out ofengagement with the engaging portions of said culvert.

6. A culvert consisting of a metal body having a pair of lower edgesspaced apart and a non-corrodible duct interposed between said loweredges.

7. A culvert, consisting of a gutter tile and a metal body over saidtile having lower edges inter connected with the side edges of said tileto complete an inclosure.

8. A culvert, consisting of a series of tiles longitudinally disposedand a metal body having lower edges spaced apart and inter connectedwith the side edges of said tiles to complete an inclosure.

9. A culvert, having an inclosing wall a segment of which is of metaland the remainder a non-corrodible duct said parts being inter joinedlaterally to circumscribe an inclosure.

10. A culvert consisting of a metal plate adapted to be bent into anupper portion of an inclosure, and a non-corrodible gutter detachablyinserted to complete said inclosure.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing` witnesses.

FREDERICK G. BRADBURY.

Witnesses:

J. T. AVERY, H. L. FIscHER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, 'Washington, D. C.

